CN110630535A - Direct-drive two-stage supercritical carbon dioxide compressor - Google Patents
Direct-drive two-stage supercritical carbon dioxide compressor Download PDFInfo
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- CN110630535A CN110630535A CN201911062926.2A CN201911062926A CN110630535A CN 110630535 A CN110630535 A CN 110630535A CN 201911062926 A CN201911062926 A CN 201911062926A CN 110630535 A CN110630535 A CN 110630535A
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- supercritical carbon
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- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 title claims abstract description 148
- 229910002092 carbon dioxide Inorganic materials 0.000 title claims abstract description 74
- 239000001569 carbon dioxide Substances 0.000 title claims abstract description 74
- 230000006835 compression Effects 0.000 claims abstract description 15
- 238000007906 compression Methods 0.000 claims abstract description 15
- 239000007789 gas Substances 0.000 claims description 76
- 238000007789 sealing Methods 0.000 claims description 53
- 238000001816 cooling Methods 0.000 claims description 14
- 239000000112 cooling gas Substances 0.000 claims description 14
- 230000003068 static effect Effects 0.000 claims description 8
- 230000005540 biological transmission Effects 0.000 claims description 5
- 230000001050 lubricating effect Effects 0.000 claims description 3
- 238000007599 discharging Methods 0.000 claims description 2
- 238000010248 power generation Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000002440 industrial waste Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D25/00—Pumping installations or systems
- F04D25/02—Units comprising pumps and their driving means
- F04D25/06—Units comprising pumps and their driving means the pump being electrically driven
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D25/00—Pumping installations or systems
- F04D25/16—Combinations of two or more pumps ; Producing two or more separate gas flows
- F04D25/163—Combinations of two or more pumps ; Producing two or more separate gas flows driven by a common gearing arrangement
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/05—Shafts or bearings, or assemblies thereof, specially adapted for elastic fluid pumps
- F04D29/056—Bearings
- F04D29/057—Bearings hydrostatic; hydrodynamic
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/08—Sealings
- F04D29/10—Shaft sealings
- F04D29/102—Shaft sealings especially adapted for elastic fluid pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/26—Rotors specially for elastic fluids
- F04D29/266—Rotors specially for elastic fluids mounting compressor rotors on shafts
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/58—Cooling; Heating; Diminishing heat transfer
- F04D29/5806—Cooling the drive system
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/12—Stationary parts of the magnetic circuit
- H02K1/20—Stationary parts of the magnetic circuit with channels or ducts for flow of cooling medium
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/20—Casings or enclosures characterised by the shape, form or construction thereof with channels or ducts for flow of cooling medium
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Power Engineering (AREA)
- Fluid Mechanics (AREA)
- Thermal Sciences (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention discloses a direct-drive two-stage supercritical carbon dioxide compressor which has the advantages of compact structure, high efficiency and low noise. A directly drive two-stage supercritical carbon dioxide compressor which characterized in that: the high-speed motor includes stator, rotor, the air bearing system that sets up in motor housing and the motor housing, the both ends of high-speed motor set up one-level compressor, second grade compressor respectively, the impeller of one-level compressor, second grade compressor is all installed on high-speed motor's rotor, one-level compressor, second grade compressor are established ties, form compression system, and the air inlet of one-level compressor is as compression system's air inlet, and the gas outlet of second grade compressor is as compression system's gas outlet.
Description
Technical Field
The invention relates to the technical field of supercritical carbon dioxide power generation systems, in particular to a direct-drive two-stage supercritical carbon dioxide compressor.
Background
Since the first industrial revolution, the main utilization of thermal energy was to convert thermal energy into mechanical energy through power systems to provide power for human activities. A supercritical carbon dioxide power generation system belongs to one of power systems, and is characterized in that carbon dioxide in a supercritical state is used as a working medium to convert heat of a heat source into mechanical energy, wherein the heat source can be from a nuclear reactor, solar energy, geothermal energy, industrial waste heat, chemical dye combustion and the like. The excellent characteristics of the supercritical carbon dioxide working medium enable the system to have good application prospect and research value. The carbon dioxide can be changed into a supercritical state only when the temperature reaches 31.1 ℃ and the pressure reaches 7.38 MPa. Therefore, in the existing supercritical carbon dioxide power generation system, the compressor belongs to a key part in the whole system, the efficiency of the compressor has great influence on the efficiency of the whole system, high-speed technologies such as a permanent magnet motor, a gas bearing, two-stage impeller coaxial installation and the like are integrated, the power density of the compressor is high due to high rotating speed, the volume of the compressor is far smaller than that of a common compressor with the same power, and materials can be effectively saved. In addition, the transmission mechanism is connected with a prime motor, so that the traditional speed increasing mechanism is cancelled, the transmission efficiency is high, and the noise is low. However, a series of shafting dynamics and bearing problems caused by high-speed rotating machinery and sealing problems caused by high-pressure working conditions restrict the development of the supercritical carbon dioxide compressor.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a direct-drive two-stage supercritical carbon dioxide compressor which has the advantages of compact structure, high efficiency and low noise.
The purpose of the invention is realized as follows:
a directly drive two-stage supercritical carbon dioxide compressor which characterized in that: the high-speed motor includes stator, rotor, the air bearing system that sets up in motor housing and the motor housing, the both ends of high-speed motor set up one-level compressor, second grade compressor respectively, the impeller of one-level compressor, second grade compressor is all installed on high-speed motor's rotor, one-level compressor, second grade compressor are established ties, form compression system, and the air inlet of one-level compressor is as compression system's air inlet, and the gas outlet of second grade compressor is as compression system's gas outlet.
Preferably, the air bearing system uses supercritical carbon dioxide as a lubricating medium, the motor housing is provided with a bearing air inlet hole and a bearing air outlet hole, and the bearing air inlet hole is used for introducing the supercritical carbon dioxide into the air bearing system; the bearing exhaust hole is used for exhausting supercritical carbon dioxide.
Preferably, the bearing air inlet hole is connected with an air outlet of the secondary compressor and used for introducing the supercritical carbon dioxide into the air bearing system to lubricate the air bearing system, and the bearing air outlet hole is connected with an air inlet of the primary compressor and used for collecting the supercritical carbon dioxide discharged by the air bearing system into the compression system.
Preferably, an air storage tank and a pressure control valve are sequentially connected in series between the air outlet of the secondary compressor and the bearing air inlet, the air storage tank is used for storing the supercritical carbon dioxide, and the pressure control valve is used for controlling the pressure of the supercritical carbon dioxide introduced into the air bearing system.
Preferably, a suction pump is connected between the bearing exhaust hole and an air inlet of the primary compressor and is used for collecting the supercritical carbon dioxide exhausted by the air bearing system into the compression system.
Preferably, the stator comprises a stator core and a stator coil, a stator cooling channel is arranged in the stator core, a stator cooling gas inlet and a stator cooling gas outlet are arranged on the motor shell, the stator cooling gas inlet and the stator cooling gas outlet are communicated with the stator cooling channel, and the stator cooling gas inlet is connected with a gas outlet of the secondary compressor and is used for introducing supercritical carbon dioxide into the stator cooling channel to cool the stator; and the stator cooling gas outlet is connected with the gas inlet of the primary compressor and is used for collecting the supercritical carbon dioxide in the stator cooling channel into the compression system.
Preferably, dry gas sealing devices are respectively arranged between the motor shell and the shell of the primary compressor and between the motor shell and the shell of the secondary compressor;
the dry gas sealing device comprises a cylindrical mounting shell, two ends of the mounting shell are fixedly connected with a motor shell and a shell of a primary compressor/a shell of a secondary compressor respectively, a cylindrical dry gas sealing pressure-bearing shell is arranged in the mounting shell, a part of a rotor of the high-speed motor, which corresponds to the dry gas sealing pressure-bearing shell, is a stepped shaft, a T-shaped shaft sleeve is sleeved on a small-diameter section of the stepped shaft, a dry gas sealing movable ring and a dry gas sealing static ring are sleeved between the small-diameter section of the shaft sleeve and the dry gas sealing pressure-bearing shell, the dry gas sealing movable ring is fixed on the shaft sleeve, the dry gas sealing static ring is fixed on the dry gas sealing pressure-bearing shell, a high-pressure end comb seal is arranged between the large-diameter section of the shaft sleeve and the dry gas sealing pressure-bearing shell, and a low-pressure end comb seal is arranged between the large;
the mounting shell is provided with a sealing air inlet, a sealing air outlet and a balance air inlet, the sealing air outlet and the balance air inlet are sequentially connected with a pressure control system and a gas outlet of the secondary compressor together, the sealing air inlet is used for introducing supercritical carbon dioxide from the gas outlet of the secondary compressor, the dry-gas sealing pressure-bearing shell is provided with a first through hole for introducing the supercritical carbon dioxide introduced by the sealing air inlet into the high-pressure-end comb seal and between the dry-gas sealing movable ring and the dry-gas sealing static ring, the sealing air outlet is used for discharging the supercritical carbon dioxide which sequentially penetrates through a gap between the dry-gas sealing movable ring and the dry-gas sealing static ring, a gap between the dry-gas sealing pressure-bearing shell and the small-diameter section of the stepped shaft and a gap between the dry-gas sealing pressure-bearing shell and the low-pressure-end comb seal, and the low-pressure-end comb seal is provided with a The middle part of the comb seal at the low-pressure end balances the air pressure.
Preferably, the air bearing system comprises a pure radial bearing, a combined radial-thrust bearing and a pure thrust bearing; the pure radial bearing is positioned at one end of the rotor, the combined radial-thrust bearing and the pure thrust bearing are positioned at the other end of the rotor, and the pure thrust bearing is positioned at the inner side of the combined radial-thrust bearing.
Preferably, the first-stage compressor and the second-stage compressor each have a diffuser located between an air inlet of the compressor and the compressor impeller.
Preferably, the compressor impeller is circumferentially fixed at the end of the rotor through involute teeth arranged in the axial hole, and is matched, tightened and fixed through a torque transmission pull rod and a locking nut.
Due to the adoption of the technical scheme, the invention has the following beneficial effects:
the compressor structure provided by the invention has the advantages that the motor and the air compressing impeller are coaxially connected with the sealing structure, the traditional mode that the gear box is connected with the motor through the coupler is eliminated, the structure is compact and simple, the power density is high and the like, the bearing air exhaust is introduced into the air inlet airflow of the compressor, and zero leakage is realized.
Drawings
FIG. 1 is an overall block diagram of the present invention;
FIG. 2 is a schematic view of a dry gas seal according to the present invention;
FIG. 3 is a view of the impeller mounting structure of the present invention;
FIG. 4 is a schematic view of an involute tooth of an impeller according to the present invention;
fig. 5 is a flow path diagram of supercritical carbon dioxide according to the present invention.
Detailed Description
Referring to fig. 1-5, a direct-drive two-stage supercritical carbon dioxide compressor comprises a first-stage compressor, a second-stage compressor, a dry gas sealing device and a high-speed motor, wherein an air bearing system of the high-speed motor uses supercritical carbon dioxide as a lubricating medium.
The two ends of the high-speed motor are respectively provided with a primary compressor 11a and a secondary compressor 11b, supercritical carbon dioxide enters from the air inlet of the primary compressor, the high-speed motor drives a primary compressor impeller 12a to compress and work the supercritical carbon dioxide, then the supercritical carbon dioxide enters from the air outlet of the primary compressor 11a into the air inlet of the secondary compressor 11b, and the supercritical carbon dioxide is compressed and works again by the secondary compressor impeller 12 b.
The motor shell 35 is provided with a bearing air inlet hole for introducing supercritical carbon dioxide from the outside of the shell to the bearing system; the motor housing is provided with a bearing exhaust hole for exhausting the supercritical carbon dioxide exhausted from the bearing system out of the housing.
The bearing air inlet is connected with the air outlet of the secondary compressor and is used for distributing partial supercritical carbon dioxide from the supercritical carbon dioxide airflow at the air outlet of the compressor and introducing the partial supercritical carbon dioxide into the bearing 31; the bearing exhaust hole is connected with the air inlet of the primary compressor and is used for collecting the supercritical carbon dioxide discharged from the bearing system into the air flow at the air inlet of the primary compressor.
An air storage tank and a pressure control valve are arranged between the air outlet of the compressor and the air inlet of the bearing; the inlet of the gas storage tank is connected with the gas outlet of the compressor and is used for storing part of supercritical carbon dioxide which is separated from the supercritical carbon dioxide gas flow at the gas outlet of the compressor; the pressure control valve is connected between the air outlet of the air storage tank and the air inlet of the bearing and is used for controlling the pressure of the supercritical carbon dioxide introduced into the bearing; and a suction pump is arranged between the bearing exhaust hole and the compressor air inlet and is used for converging the supercritical carbon dioxide discharged by the bearing into the air flow at the compressor air inlet.
The stator 32 comprises a stator core and a stator coil, a stator cooling channel is arranged in the stator core, and a stator cooling air inlet and a stator cooling air outlet which are communicated to the outside of the motor shell from the stator cooling channel are formed in the motor shell; the stator cooling gas inlet is connected with the compressor gas inlet and used for introducing low-temperature supercritical carbon dioxide of the compressor gas inlet into the stator cooling channel to cool the stator; and the stator cooling gas outlet is connected with the compressor gas inlet and used for guiding the supercritical carbon dioxide in the stator cooling channel back to the compressor gas inlet.
The compressor head first-stage 11a and the compressor head second-stage 11b respectively comprise a first-stage diffuser 13a and a second-stage diffuser 13b, supercritical carbon dioxide working medium firstly enters from an air inlet of the first-stage compressor head 11a and is introduced into the compressor impeller 12a through the first-stage diffuser 13a to compress the supercritical carbon dioxide to do work, the compressed supercritical carbon dioxide is introduced into an air inlet of the second-stage compressor 11b from an air outlet of the first-stage compressor 11a, and then is introduced into the second-stage compressor impeller 12b through the diffuser 13b of the second-stage compressor to compress the supercritical carbon dioxide to do work.
The rotor comprises a permanent magnet rotating shaft 36, a dry gas sealing shaft sleeve 38, a dry gas sealing dynamic ring 37, a primary air compressing impeller 12a and a secondary air compressing impeller 12b which are respectively fixed at two ends of the rotating shaft 36 in a tightening way through matching of an involute tooth 16 torque transmission pull rod 14 and a locking nut 15.
Be provided with the dry gas seal between motor and the compressor, wherein include, dry gas seal installation casing 25, dry gas seal pressure-bearing casing 26, high-pressure side broach seals 28, axle sleeve 38, dry gas seal rotating ring 37, dry gas seal quiet ring 27, low pressure end broach seals 24, supercritical carbon dioxide gas is drawn forth by the compressor gas outlet and is got into main seal air inlet 21 through pressure control system, discharge by sealed gas vent 22 and introduce the compressor air inlet again, dry gas seal balanced gas is got into by balanced gas air inlet 23, sealed both ends still are equipped with high-pressure side broach seals 28 and low pressure end broach seals 24 respectively.
The air bearing system comprises a pure radial bearing 31, a combined radial-thrust bearing 34 and a pure thrust bearing 33; the pure radial bearing 31 is sleeved between the motor shell 35 and the permanent magnet rotating shaft 36, and the radial-thrust combined bearing 34 and the pure thrust bearing 33 are connected to the other end of the permanent magnet rotating shaft and sleeved between the motor shell 35 and the permanent magnet rotating shaft 36.
Finally, it is noted that the above-mentioned preferred embodiments illustrate rather than limit the invention, and that, although the invention has been described in detail with reference to the above-mentioned preferred embodiments, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the scope of the invention as defined by the appended claims.
Claims (10)
1. A directly drive two-stage supercritical carbon dioxide compressor which characterized in that: the high-speed motor includes stator, rotor, the air bearing system that sets up in motor housing and the motor housing, the both ends of high-speed motor set up one-level compressor, second grade compressor respectively, the impeller of one-level compressor, second grade compressor is all installed on high-speed motor's rotor, one-level compressor, second grade compressor are established ties, form compression system, and the air inlet of one-level compressor is as compression system's air inlet, and the gas outlet of second grade compressor is as compression system's gas outlet.
2. The direct-drive two-stage supercritical carbon dioxide compressor as recited in claim 1, characterized in that: the air bearing system takes supercritical carbon dioxide as a lubricating medium, the motor shell is provided with a bearing air inlet hole and a bearing exhaust hole, and the bearing air inlet hole is used for introducing the supercritical carbon dioxide into the air bearing system; the bearing exhaust hole is used for exhausting supercritical carbon dioxide.
3. The direct-drive two-stage supercritical carbon dioxide compressor as claimed in claim 2, characterized in that: the bearing air inlet is connected with an air outlet of the secondary compressor and used for introducing the supercritical carbon dioxide into the air bearing system to lubricate the air bearing system, and the bearing air outlet is connected with an air inlet of the primary compressor and used for collecting the supercritical carbon dioxide discharged by the air bearing system into the compression system.
4. The direct-drive two-stage supercritical carbon dioxide compressor as set forth in claim 3, characterized in that: and a gas storage tank and a pressure control valve are sequentially connected in series between the gas outlet of the secondary compressor and the bearing gas inlet, the gas storage tank is used for storing the supercritical carbon dioxide, and the pressure control valve is used for controlling the pressure of the supercritical carbon dioxide introduced into the air bearing system.
5. The direct-drive two-stage supercritical carbon dioxide compressor as set forth in claim 3, characterized in that: and a suction pump is connected between the bearing exhaust hole and the air inlet of the primary compressor and is used for collecting the low-pressure supercritical carbon dioxide discharged by the air bearing system into the compression system.
6. The direct-drive two-stage supercritical carbon dioxide compressor as recited in claim 1, characterized in that: the stator comprises a stator core and a stator coil, a stator cooling channel is arranged in the stator core, a stator cooling gas inlet and a stator cooling gas outlet are arranged on the motor shell, the stator cooling gas inlet and the stator cooling gas outlet are communicated with the stator cooling channel, and the stator cooling gas inlet is connected with a gas outlet of the secondary compressor and is used for introducing supercritical carbon dioxide into the stator cooling channel to cool the stator; and the stator cooling gas outlet is connected with the gas inlet of the primary compressor and is used for collecting the supercritical carbon dioxide in the stator cooling channel into the compression system.
7. The direct-drive two-stage supercritical carbon dioxide compressor as recited in claim 1, characterized in that: dry gas sealing devices are respectively arranged between the motor shell and the shell of the first-stage compressor and between the motor shell and the shell of the second-stage compressor;
the dry gas sealing device comprises a cylindrical mounting shell, two ends of the mounting shell are fixedly connected with a motor shell and a shell of a primary compressor/a shell of a secondary compressor respectively, a cylindrical dry gas sealing pressure-bearing shell is arranged in the mounting shell, a part of a rotor of the high-speed motor, which corresponds to the dry gas sealing pressure-bearing shell, is a stepped shaft, a T-shaped shaft sleeve is sleeved on a small-diameter section of the stepped shaft, a dry gas sealing movable ring and a dry gas sealing static ring are sleeved between the small-diameter section of the shaft sleeve and the dry gas sealing pressure-bearing shell, the dry gas sealing movable ring is fixed on the shaft sleeve, the dry gas sealing static ring is fixed on the dry gas sealing pressure-bearing shell, a high-pressure end comb seal is arranged between the large-diameter section of the shaft sleeve and the dry gas sealing pressure-bearing shell, and a low-pressure end comb seal is arranged between the large;
the mounting shell is provided with a sealing air inlet, a sealing air outlet and a balance air inlet, the sealing air outlet and the balance air inlet are sequentially connected with a pressure control system and a gas outlet of the secondary compressor together, the sealing air inlet is used for introducing supercritical carbon dioxide from the gas outlet of the secondary compressor, the dry-gas sealing pressure-bearing shell is provided with a first through hole for introducing the supercritical carbon dioxide introduced by the sealing air inlet into the high-pressure-end comb seal and between the dry-gas sealing movable ring and the dry-gas sealing static ring, the sealing air outlet is used for discharging the supercritical carbon dioxide which sequentially penetrates through a gap between the dry-gas sealing movable ring and the dry-gas sealing static ring, a gap between the dry-gas sealing pressure-bearing shell and a small-diameter section of the stepped shaft and a gap between the dry-gas sealing pressure-bearing shell and the low-pressure-end comb seal, and the low-pressure-end comb seal is provided with a The middle part of the comb seal at the low-pressure end is isolated from the atmosphere.
8. The direct-drive two-stage supercritical carbon dioxide compressor as recited in claim 1, characterized in that: the air bearing system comprises a pure radial bearing, a combined radial-thrust bearing and a pure thrust bearing; the pure radial bearing is positioned at one end of the rotor, the combined radial-thrust bearing and the pure thrust bearing are positioned at the other end of the rotor, and the pure thrust bearing is positioned at the inner side of the combined radial-thrust bearing.
9. The direct-drive two-stage supercritical carbon dioxide compressor as recited in claim 1, characterized in that: the first-stage compressor and the second-stage compressor are respectively provided with diffusers which are positioned between an air inlet of the compressor and the air compressing impeller.
10. The direct-drive two-stage supercritical carbon dioxide compressor as recited in claim 1, characterized in that: the compressed air impeller is circumferentially fixed at the end part of the rotor through involute teeth arranged in the axial hole and is matched, tensioned and fixed through a torque transmission pull rod and a locking nut.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911062926.2A CN110630535A (en) | 2019-10-31 | 2019-10-31 | Direct-drive two-stage supercritical carbon dioxide compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911062926.2A CN110630535A (en) | 2019-10-31 | 2019-10-31 | Direct-drive two-stage supercritical carbon dioxide compressor |
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| Publication Number | Publication Date |
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| CN110630535A true CN110630535A (en) | 2019-12-31 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911062926.2A Pending CN110630535A (en) | 2019-10-31 | 2019-10-31 | Direct-drive two-stage supercritical carbon dioxide compressor |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024045240A1 (en) * | 2022-09-01 | 2024-03-07 | 哈电发电设备国家工程研究中心有限公司 | Supercritical carbon dioxide radial-inflow turbine structure suitable for gas inlet at 600 ℃ |
-
2019
- 2019-10-31 CN CN201911062926.2A patent/CN110630535A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024045240A1 (en) * | 2022-09-01 | 2024-03-07 | 哈电发电设备国家工程研究中心有限公司 | Supercritical carbon dioxide radial-inflow turbine structure suitable for gas inlet at 600 ℃ |
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